Flushing apparatus

ABSTRACT

A flushing apparatus for plumbing fixtures and the like embodies a single main moving member with flushing valve attached at the bottom and the upper end open to receive makeup or refill water to restore the trap seal in the fixture below. The main moving member also provides an overflow for flush tank water and is arranged concentrically around a fixed upright member which is secured to the tank bottom wall at its outlet. The main moving member with flushing valve attached is raised by utilizing the pressure of tank refill water and is held open by this pressure until the flush tank is empty. Accuracy of operation is assured. A float-operated valve is used to control the flow of refill water, diverting it from one passageway to another to allow the flushing valve to close. A chamber containing the valve float has its lower end extended to a point near the bottom of the tank, thus accurately timing the opening of the float valve with the emptying of the tank, and thus diverting the refill water to allow the flushing valve to close.

[451 Aug. 26, 1975 United States Patent [1 1 Braswell ABSTRACT FLUSHINGAPPARATUS Inventor: James Braswen, 218 Hooker A flushing apparatus forplumbing fixtures and the like wflmmgton, 28401 embodies a single mainmoving member with flushing June 24, 1974 valve attached at the bottomand the upper end open to receive makeup or refill water to restore thetrap 22 Filed:

PP 482,764 seal in the fixture below. The main moving member alsoprovides an overflow for flush tank water and is 52 US. 4/41; 4/67 Rarranged wmemrically around a fixed Upright [51] Int Cl E03d 1/36 berwhich is secured to the tank bottom wall at its outlet. The main movingmember with flushing valve attached is raised by utilizing the pressureof tank refill Field of Search...................

[56] References Cited water and is held open by this pressure until theflush tank is empty. Accuracy of operation is assured. A UNITED STATESPATENTS float-operated valve is used to control the flow of refillwater, diverting it from one passageway to another to allow the flushingvalve to close. A chamber containing the valve float has its lower endextended to a point near the bottom of the tank, thus accurately tim-XMRMX R464 7 6 .4 .4 4 un mm W v.8 n "d on Bw flpmw ns oowm MRBJB 0266455 557 99999 /HHHH 23586 4 246 20605 .9 47406 846 22223 ing the openingof the float valve with the emptying of Fri-mam Examiner Richard EAegerter the tank, and thus diverting the refill water to allowAssistant Examiner-Charles E. Phillips the flushmg valve to close A A! FB.P.F'hb ,J.

Home gen or zrm 1s urne r 18 Claims, 5 Drawing Flgures FLUSHINGAPPARATUS BACKGROUND OF THE INVENTION The invention relates toimprovements on the flushing apparatus disclosed in US. Pat. No.3,816,856, is sued to James W. Braswell on June 18, 1974. Moreparticularly, the present invention has for its objective to improve theconstruction and the mode of operation of the flushing apparatus interms of timing the opening of a float-operated valve employed tocontrol the flow of refill water, and diverting such water from onepassageway to another to allow closing of the main flushing valve. Thefloat-operated valve is accurately timed to open in relation to theemptying of the flush tank, and this is accomplished by extending thefloat valve chamber downwardly to a point near the bottom wall of thetank.

Additionally, the invention employs a unique new concept for elevatingthe main moving member of the apparatus with the flushing valveattached. In this connection, the pressure of the refill water enteringthe tank is utilized, and the flushing valve is held open by thispressure until the flush tank is empty.

The construction allows complete drainage of the tank. The main movingmember is free to move up and down and to rotate about the fixed uprightmember. The apparatus may be installed on existing tanks or may be usedfor new installations. Parts are provided to prevent the vortex causedby water flowing through the tank outlet.

When the flush tank is filling and refill water is diverted into the topof the main moving member to refill the fixture, air is trapped in theflow chamber and the float remains down. The air remains trapped in thechamber, opposed by water pressure at the top openings of the chamber.

When the flush tank is full, and the tank filling valve closesterminating the flow of water to the tank and to the refill tube,pressure is released at the top openings of the float chamber to allowthe trapped air to escape, and the float rises as water fills thechamber rising from below. This closes the float valve that divertsrefill water and it remains closed until the next flushing cycle ofoperation.

To initiate the flushing cycle, the flow of refill water must bestarted. This is done by causing the tank filling valve to open andprovide the necessary volume and pressure of the refill water.

To open the tank filling valve, the pressure or force that holds thisvalve closed must be relieved. The method used depends on the type offilling valve in the particular installation. In the disclosedembodiment, a conventional float-operated filling valve has the usualfloat ball replaced with a hollow float having a bottom opening so as totrap the air therein when the tank fills with water. A tube connectedinto the top of this float has its other end submerged below waterlevelto trap the air in the float. To activate the tank filling valve, theflexible tube is manually raised above water level to allow the escapeof air from the float, thus sinking the float to open the filling valve.The tube end is then dropped to its lower position ready for the nextoperation. This movement of the flexible tube is carried out byutilizing a conventional flush tank handle and an extended leverconnected to the end of the tube. If desired, the same operation may beaccomplished by utilizing an air release valve of the push button typeattached to the end ofa tube as shown in U.S. Pat. No. 2,740,129.

Other features and advantages of the present invention will becomeapparent during the course of the following detailed description.

BRIEF DESCRIPTION OF DRAWING FIGURES FIG. I is a side elevation, partlyin section, of a flush tank for plumbing fixtures equipped with theimproved flushing apparatus of the invention.

FIG. 2 is an enlarged central vertical section taken through theflushing apparatus.

FIG. 3 is a horizontal cross section taken on line 33 of FIG. 2.

FIG. 4 is a similar section taken on line 4-4 of FIG. 2.

FIG. 5 is a similar section taken on line 5-5 of H6.

DETAILED DESCRIPTION 7 Referring to the drawings in detail, theillustrated flush tank has a bottom wall 1, recessed centrally at 2, toallow complete drainage of water. A threaded fitting 3 is anchoredsecurely within tank outlet opening 3' in a conventional manner and iscoupled with a mating fitting or sleeve 4 equipped with a compressiblegasket 5 to prevent water leakage. Spacer elements 6 rigid with thefitting 4 are also joined to an upright vertical member or tube 7 havingan enlarged upper portion 8 in the nature of a cup or cylinder and anintermediate internally threaded coupling section 9. The elements 4, 6,7, 8 and 9 thus constitute a fixed upright structure which is anchoredto the tank bottom wall 1 in the manner shown, or in any otherappropriate manner which may be found desirable for a particularinstallation or a particular type of plumbing fixture. Preferably, theentire apparatus is installable on the flush tank and removabletherefrom without the necessity for separating the tank from thefixture.

The mentioned spacer elements 6 maintain the elements 4 and 7 paralleland upright within the tank. The top of fixed tube 7 is closed by a wall10 immediately below the threaded opening in the coupling section 9.

A further fixed vertical pipe 11 has a lower threaded end 12 engaged inthreaded socket portion 9. The top of pipe 11 is joined to a rightangular elbow 13 having a horizontal threaded extension 14 and a lowershoulder 15. Near its lower end, the pipe 11 has a pair of diametricallyopposed orifices 16 opening into chamber 8 of cup-like portion 8 nearthe bottom wall of the latter.

A main moving member or sleeve 17 has an annular groove 18 near itslower end receiving and holding an elastic flushing valve element 19adapted to sealingly engage the top flange of fitting 4 while in a downposition. The sleeve 17 is coaxial and concentric with elements 7 and 8,and the upper end of the sleeve is provided with a partition wall 20through which the sleeve 17 is joined to an interior relatively shorttubular part 21. The partition wall 20 has a plurality of spacedopenings 22 formed therethrough for a purpose to be described. Theseopenings allow refill water to enter the sleeve 17 and to flowdownwardly to the plumbing fixture below. The openings 22 also act as avacuum breaker and anti-siphoning means for sanitary reasons.

The tubular portion 21 fits closely and slidably around the fixed pipe11. At the lower end of the element 21, a horizontal annular partition23 projects outwardly therefrom and has its peripheral portion insliding contact with the bore of cup-like element 8, thus forming apiston member in the chamber 8' between pipe 11 and cup-like member 8.Several vanes 24are provided on the bottom of the piston member and areset at an angle to orifices 16, FIG. 3. Near its upper end, the element8 is provided with one or more vertically elongated openings 25 for apurpose to be described.

The sleeve 17 is telescoped over the internal fixed upright parts and isheld properly aligned at its bottom by radial spacers 6 and at its topby the pipe 1 1 engaged in sleeve portion 21. The sleeve 17 is free tomove up and down and to rotate and will always accurately seat flushingvalve element 19 when down. The high position of sleeve 17 is indicatedin broken lines at 26 in FIG. 2.

The numeral 27 designates a fitting having passageways 28 and 29. Athreaded terminal 30 on one end of fitting 27 is coupled to threadedextension 14 while a right angular depending threaded terminal 31 issimilarly coupled within a threaded socket 33 of a tubular body 39forming a float chamber. A tube connection 32 on. fitting 27 is coupledwith a refilling tube 34 leading from a tank refilling valve 46, FIG. 1.Fitting 27 additionally has a bore or passageway 35 formed verticallytherein and slidably receiving a valve stem 36 to form a guide and valveseat.

A cylindrical float 37 secured to the stem 36 or valve element isprovided on its lower end with vanes 38 arranged at an angle to the flowof water for a purpose later to be described. The tubular body 39defines a chamber for the float 37 within which the latter is free tomove up and down so that valve element 36 may open and close passageway29. The lowermost position of float, 37 is indicated in broken lines bythe numeral 40, FIG. 2. Tubular body 39 has a lower reduced diameterextension 41 terminating near and above tank bottom wall 1 and having anangled or beveled lower end 42. An annular shoulder 43 is formed at thejuncture of elements 39 and 41 to serve as a stop for the downwardmovement of float 37.

. be so closely fitted as to resist their movement. Small quantities ofwater escaping between such sliding members is anticipated, and anexcess of water and pressure will always be available despite suchseepage.

Fitting 27 is provided with a vertical orifice 44 leading downwardlyfrom passageway 29 leading into the top of chamber 45.

Filling valve 46 is connected to fitting 27 by tube 34, as described,and to hollow float 47 in the flush tank by a valve operating rod 48.The hollow float 47 is connected to a flexible tube 49 whichcommunicates at one end with the top of the float. At its lower end, thetube is attached to a lever 50, in turn having its upper end secured tothe customary tank handle 51.

The high water level in the flush tank is shown by the numeral 52 andthe overflow level by the numeral 53.

Arrow 54' indicates the flow of refill water being diverted into the topof sleeve 17 and arrow 55 indicates the flow of refill water used toraise the sleeve 17 and valve 19 for the flushing operation. The flushtank itself is indicated by the numeral 54.

OPERATION Assume that the flush tank 54 is filled with water to the highwater level 52. Then manual pressure applied to the handle 51 will raisethe lever 50 so that the lower end of tube 49 is raised above the waterlevel 52. Air trapped in the float 47 is released through the tube andthe float sinks with arm 48 causing filling valve 46 to open so thatwater will enter the tank through tube 34, passageway 28, pipe 11,orifices 16 and into the chamber 8 below piston 23. Here, the incomingwater acts on the bottom of piston 23 and forces main sleeve 17 upwardlyto unseat flushing valve 19. As the water flows through orifices 16, itstrikes angled vanes 24 inducing slight rotation of sleeve 17 on itsvertical axis as it rises and becomes water-borne. Valve 19 will thus beseated in a different place after each flushing cycle to provide acleaning action on the valve seat 4.

Manual pressure on handle 51 is momentary, and when removed, lever 50and tube 49 descend to the lower position shown in FIG. 1 ready for thenext flushing cycle.

At this point, chamber 45 is filled with water, and float 37 and valveelement 36 are raised with passageway 29 closed, sending the refillwater through passageway 28, as stated above.

when piston 23 rises, it will reach elongated opening 25 thus allowingwater to escape through such opening, partially relieving the pressure.This movement is pro gressive, so that the piston finds a balancingpoint and is held in a treading mode, suspending sleeve 17 and valve 19in the open position to complete the flushing operation.

As the tank water recedes, water is retained in chamber 45, being heldby a slight vacuum, as no air is allowed to enter chamber 45. Orifice 44connects into passageway 29 on the pressure side of valve element 36 sothat only a small amount of water enters chamber 45 at this moment.Thus, valve element 36 is held closed, as shown, until the tank water iscompletely empty into the fixture for flushing.

With the tank empty, the lower end of tubular extension 41 is open toair and angled end 42 allows air to enter extension 41 and chamber 45 asthe flush tank empties. The float 37 immediately lowers in chamber 45causing valve element 36 to open passageway 29 for diverting refillwater through passageway 29 onto the top of sleeve 17, as indicated bythe arrow 54. As water follows the path of least resistance,'pressure isrelieved in chamber 8? and the sleeve 17 is gradually lowered by gravityto seat flushing valve 19. Water remains in chamber 8' and seeps bypiston 23 as the latter lowers with sleeve 17 to provide a gradual orretarded movement.

The tank 54 is now being filled with water and refill water is enteringsleeve 17 through openings 22 and annular space 17' between elements 8and 17. This water flows downwardly into the fixture below to restorethe trap seal. As the tank water level rises, air is trapped in chamber45, as orifice 44 opening into passageway 29 has a slight water pressureopposing the upward flow of air. This condition continues until the tankis refilled to the level 52, at which time the filling valve 46 isclosed by the action of float 47, thus stopping the flow of waterthrough the tube 34.

Water drains from passageway 29 and allows air trapped in chamber 45 toescape through port 44 and water now rises in chamber 45, lifting float37 and moving valve element 36 to the uppermost position closingpassageway 29. As water flows from extension 41 into chamber 45, itimpinges on vanes 38, and they being at an angle to the flow of watercause elements 37 and 36 to rotate slightly on their common axis toeffect a cleaning action of their mating surfaces.

The apparatus is now in condition for another flushing cycle.

It is to be understood that the form of the invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size and arrangement of partsmay beresorted to, without departing from the spirit of the invention or scopeof the subjoined claims.

1 claim:

1. A flushing apparatus for use with a flush tank having a bottomdischarge opening comprising a fixed upright member anchored withrespect to the discharge opening and extending thereabove and' having acuplike top portion, a vertical pipe coupled with said upright memberand extending through the cup-like top portion and above the same, afitting means coupled to said vertical pipe and having a firstpassageway in communication with the bore of said pipe and a secondpassageway leading from the first passageway and opening exteriorly ofsaid pipe, a filling valve means coupled with said fitting means anddelivering refill water to the first passageway when open, a mainvertical sleeve telescoped movably over the fixed upright member andsaid vertical pipe, an interior sleeve part on said main vertical sleeveand telescoped over said vertical pipe and projecting into said cup-liketop portion, a piston element on said interior sleeve part and engagedmovably in the bore of the cup-like top portion, said cuplike topportion having a side wall opening near the top thereof and saidvertical pipe having a lateral port near the bottom of the cup-likeportion, a flushing valve element on the lower end of the main verticalsleeve, a tubular member coupled to the fitting means and dependingtherefrom and terminating near the bottom of a tank utilizing saidapparatus and having a float chamber, a float body within the floatchamber movably, a valve element secured to the float body and extendingthereabove and projecting into a guidance and seating opening of saidfitting means and adapted in a raised position to close said secondpassageway and in a lowered position to open the second passageway, andthere being a narrow orifice interconnecting said float chamber andsecond passageway external to said guidance and seat opening.

2. A flushing apparatus comprising a fixed upright support and guidestructure mountable in a flush tank adjacent the tank outlet, a mainflushing valve movable member in telescoped engagement with said uprightstructure, said upright structure and said main member cooperating toform fluid flow responsive means to elevate said member with respect tosaid upright structure, said member responding to gravity when lowering,pressurized fluid delivery means coupled with said upright structure andhaving fluid passage means commu nicating with said fluid flowresponsive means, and a float elevated gravity responsive valve deviceconnected with said pressurized fluid delivery means and operable todivert the delivery of fluid from said fluid passage means to a secondpassage means delivering the fluid into a flush tank exteriorly of saidmember,

and said valve device including a float chamber having a passagewayextending close to the bottom of a flush tankfor the entry of air intothe passageway and said float chamber when the tank is'empty and for theentry of tank fluid when thefluid level in the tank is rising.

3. A flushing apparatus according to claim 2, and said fixed uprightsupport and guide structure including a cup-like top portion having aside wall opening near its top, said main flushing valve movable membertelescoped over the cup-like portion and having a piston body projectinginto the cup-like portion and responding to the delivery of said fluidby said delivery means to elevate said member.

4. A flushing apparatus according to claim 3, and an upright pipefonning a part of said fluid delivery means coupled to said support andguide structure and disposed centrally within said cup-like portion,said piston body being tubular within the cup-like portion and beingtelescoped over said pipe and being joined to said member.

5. A flushing apparatus according to claim 4, and said member having atop wall joining the tubular piston body and the side wall of the memberabove the cuplike portion, said top wall having fluid inlet openings,said pipe having fluid outlet opening means near the bottom of thecup-like portion and below the tubular piston body.

6. A flushing apparatus according to claim 5, and an elastic annularflushing valve element secured to the lower end of the main flushingvalve movable member for seating on a seat element at the bottom of aflush tank surrounding a flush tank outlet.

7. A flushing apparatus according to claim 6, and said fixed uprightsupport and guide structure including spacer means at its lower endcentering the structure relative to a tank outlet and centering andguiding said main movable member, said member telescoped over saidspacer means.

8. A flushing apparatus according to claim 7, and said spacer meanscomprising plural radial blade-like spacer elements fixed inrelationship to a center upright member, said upright member disposedinside of the main flushing valve movable member.

9. A flushing apparatus according to claim 3, and impeller vane means onsaid piston body in the path of said fluid entering the cup-like portionand responding to said fluid to produce turning of said main flushingvalve movable member on its longitudinal axis.

10. A flushing apparatus according to claim 2, and said pressurizedfluid delivery means comprising a tank refilling valve, a fittingelement coupled with the fixed upright support and guide structure andcoupled with said float elevated gravity responsive valve device andhaving divergent fluid passages, said valve device including a valveelement blocking one of said passages at selected times responsive toelevation of the valve element by said float.

11. A flushing apparatus according to claim 10, and said valve devicefloat chamber being coupled with said fitting element, said fittingelement having a orifice extending between said float chamber and thefluid passage of the valve device which is blocked by said valveelement.

12. A flushing apparatus according to claim 11, and said orifice beingon the high pressure side of said valve element in said fitting element.

13. A flushing apparatus according to claim 12, and a tubeinterconnecting said fitting element to said tank refilling valve.

14. A flushing apparatus according to claim 13, and a float operated armconnected with said refilling valve to control the operation of thelatter, a hollow float carried by the arm and having a fluid inletopening, a flexible tube coupled with the hollow float at a pointsubstantially opposite to said opening and having a free end adapted tobe submerged in tank fluid and to be elevated therefrom, and a manuallever means coupled to the tube to elevate it.

15. A flushing apparatus according to claim 10, and a float body in saidfloat chamber movably, said valve element secured directly to said floatbody at the top thereof, and valve element rotation inducing vane meanson the bottom of the float body responding to the entry of fluid throughsaid float chamber passageway.

16. A flushing apparatus according to claim 2, and said valve devicecomprising a substantially vertical cylinder body coupled to said fluiddelivery means and extending close to the bottom of a flush tank, saidcylinder body having a lower end reduced diameter tubular extension andhaving an upper float body chamber communicating with the bore of theextension.

17. A flushing apparatus according to claim 16, and said extensionhaving a lower inclined terminal end.

18. A flushing apparatus according to claim 16, and there being a floatbody stop shoulder at the bottom of said chamber to limit downwardmovement of the float body.

1. A flushing apparatus for use with a flush tank having a bottomdischarge opening comprising a fixed upright member anchored withrespect to the discharge opening anD extending thereabove and having acup-like top portion, a vertical pipe coupled with said upright memberand extending through the cuplike top portion and above the same, afitting means coupled to said vertical pipe and having a firstpassageway in communication with the bore of said pipe and a secondpassageway leading from the first passageway and opening exteriorly ofsaid pipe, a filling valve means coupled with said fitting means anddelivering refill water to the first passageway when open, a mainvertical sleeve telescoped movably over the fixed upright member andsaid vertical pipe, an interior sleeve part on said main vertical sleeveand telescoped over said vertical pipe and projecting into said cup-liketop portion, a piston element on said interior sleeve part and engagedmovably in the bore of the cup-like top portion, said cup-like topportion having a side wall opening near the top thereof and saidvertical pipe having a lateral port near the bottom of the cup-likeportion, a flushing valve element on the lower end of the main verticalsleeve, a tubular member coupled to the fitting means and dependingtherefrom and terminating near the bottom of a tank utilizing saidapparatus and having a float chamber, a float body within the floatchamber movably, a valve element secured to the float body and extendingthereabove and projecting into a guidance and seating opening of saidfitting means and adapted in a raised position to close said secondpassageway and in a lowered position to open the second passageway, andthere being a narrow orifice interconnecting said float chamber andsecond passageway external to said guidance and seat opening.
 2. Aflushing apparatus comprising a fixed upright support and guidestructure mountable in a flush tank adjacent the tank outlet, a mainflushing valve movable member in telescoped engagement with said uprightstructure, said upright structure and said main member cooperating toform fluid flow responsive means to elevate said member with respect tosaid upright structure, said member responding to gravity when lowering,pressurized fluid delivery means coupled with said upright structure andhaving fluid passage means communicating with said fluid flow responsivemeans, and a float elevated gravity responsive valve device connectedwith said pressurized fluid delivery means and operable to divert thedelivery of fluid from said fluid passage means to a second passagemeans delivering the fluid into a flush tank exteriorly of said member,and said valve device including a float chamber having a passagewayextending close to the bottom of a flush tank for the entry of air intothe passageway and said float chamber when the tank is empty and for theentry of tank fluid when the fluid level in the tank is rising.
 3. Aflushing apparatus according to claim 2, and said fixed upright supportand guide structure including a cup-like top portion having a side wallopening near its top, said main flushing valve movable member telescopedover the cup-like portion and having a piston body projecting into thecup-like portion and responding to the delivery of said fluid by saiddelivery means to elevate said member.
 4. A flushing apparatus accordingto claim 3, and an upright pipe forming a part of said fluid deliverymeans coupled to said support and guide structure and disposed centrallywithin said cup-like portion, said piston body being tubular within thecup-like portion and being telescoped over said pipe and being joined tosaid member.
 5. A flushing apparatus according to claim 4, and saidmember having a top wall joining the tubular piston body and the sidewall of the member above the cup-like portion, said top wall havingfluid inlet openings, said pipe having fluid outlet opening means nearthe bottom of the cup-like portion and below the tubular piston body. 6.A flushing apparatus according to claim 5, and an elastic annularflushing valve element secured to the lower end of the main flushingvalve movable meMber for seating on a seat element at the bottom of aflush tank surrounding a flush tank outlet.
 7. A flushing apparatusaccording to claim 6, and said fixed upright support and guide structureincluding spacer means at its lower end centering the structure relativeto a tank outlet and centering and guiding said main movable member,said member telescoped over said spacer means.
 8. A flushing apparatusaccording to claim 7, and said spacer means comprising plural radialblade-like spacer elements fixed in relationship to a center uprightmember, said upright member disposed inside of the main flushing valvemovable member.
 9. A flushing apparatus according to claim 3, andimpeller vane means on said piston body in the path of said fluidentering the cup-like portion and responding to said fluid to produceturning of said main flushing valve movable member on its longitudinalaxis.
 10. A flushing apparatus according to claim 2, and saidpressurized fluid delivery means comprising a tank refilling valve, afitting element coupled with the fixed upright support and guidestructure and coupled with said float elevated gravity responsive valvedevice and having divergent fluid passages, said valve device includinga valve element blocking one of said passages at selected timesresponsive to elevation of the valve element by said float.
 11. Aflushing apparatus according to claim 10, and said valve device floatchamber being coupled with said fitting element, said fitting elementhaving a orifice extending between said float chamber and the fluidpassage of the valve device which is blocked by said valve element. 12.A flushing apparatus according to claim 11, and said orifice being onthe high pressure side of said valve element in said fitting element.13. A flushing apparatus according to claim 12, and a tubeinterconnecting said fitting element to said tank refilling valve.
 14. Aflushing apparatus according to claim 13, and a float operated armconnected with said refilling valve to control the operation of thelatter, a hollow float carried by the arm and having a fluid inletopening, a flexible tube coupled with the hollow float at a pointsubstantially opposite to said opening and having a free end adapted tobe submerged in tank fluid and to be elevated therefrom, and a manuallever means coupled to the tube to elevate it.
 15. A flushing apparatusaccording to claim 10, and a float body in said float chamber movably,said valve element secured directly to said float body at the topthereof, and valve element rotation inducing vane means on the bottom ofthe float body responding to the entry of fluid through said floatchamber passageway.
 16. A flushing apparatus according to claim 2, andsaid valve device comprising a substantially vertical cylinder bodycoupled to said fluid delivery means and extending close to the bottomof a flush tank, said cylinder body having a lower end reduced diametertubular extension and having an upper float body chamber communicatingwith the bore of the extension.
 17. A flushing apparatus according toclaim 16, and said extension having a lower inclined terminal end.
 18. Aflushing apparatus according to claim 16, and there being a float bodystop shoulder at the bottom of said chamber to limit downward movementof the float body.